tested said:
You bring up something that I don't think most Americans understand: local TV news is almost unique to America. Canada has some local TV news in larger markets, but in the UK and most other areas the best you'll get is a "regional" broadcast from a national network. Canada certainly has regional broadcasts from the national networks too, but you'll also find local news operations in places like Toronto and Vancouver. That localism makes the local affiliates here much more valuable to their community than the national network.
You bring up a point that I've wondered about as I am under the impression that "local" TV, whether its news or sports or talk or advertising, is almost exclusively an American (and to a lesser extent Canadian) institution. I'd also be curious as to what cable/sat penetration is in other countries that are in the process of a DTV conversion or have already completed the transition.
But the question that remains is that if an affiliate's local newscasts are valuable to the community and highly successful, is it of any consequence to the network or even attributable to the network affiliation in any way? If the nets move to cable - which I think is inevitable - is the prospect of locally produced news (or other locally-produced programming) threatened or will the opportunities increase?